Search Results - "Kangro, Kersti"

Simultaneous retrieval of selected optical water quality indicators from Landsat-8, Sentinel-2, and Sentinel-3 by Pahlevan, Nima, Smith, Brandon, Alikas, Krista, Anstee, Janet, Barbosa, Claudio, Binding, Caren, Bresciani, Mariano, Cremella, Bruno, Giardino, Claudia, Gurlin, Daniela, Fernandez, Virginia, Jamet, Cédric, Kangro, Kersti, Lehmann, Moritz K., Loisel, Hubert, Matsushita, Bunkei, Hà, Nguyên, Olmanson, Leif, Potvin, Geneviève, Simis, Stefan G.H., VanderWoude, Andrea, Vantrepotte, Vincent, Ruiz-Verdù, Antonio

“…Constructing multi-source satellite-derived water quality (WQ) products in inland and nearshore coastal waters from the past, present, and future missions is a…”
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Consistency of Radiometric Satellite Data over Lakes and Coastal Waters with Local Field Measurements by Alikas, Krista, Ansko, Ilmar, Vabson, Viktor, Ansper, Ave, Kangro, Kersti, Uudeberg, Kristi, Ligi, Martin

“…The Sentinel-3 mission launched its first satellite Sentinel-3A in 2016 to be followed by Sentinel-3B and Sentinel-3C to provide long-term operational…”
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Detecting Climate Driven Changes in Chlorophyll-a Using High Frequency Monitoring: The Impact of the 2019 European Heatwave in Three Contrasting Aquatic Systems by Free, Gary, Bresciani, Mariano, Pinardi, Monica, Giardino, Claudia, Alikas, Krista, Kangro, Kersti, Rõõm, Eva-Ingrid, Vaičiūtė, Diana, Bučas, Martynas, Tiškus, Edvinas, Hommersom, Annelies, Laanen, Marnix, Peters, Steef

“…The frequency of heatwave events in Europe is increasing as a result of climate change. This can have implications for the water quality and ecological…”
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A Chlorophyll-a Algorithm for Landsat-8 Based on Mixture Density Networks by Smith, Brandon, Pahlevan, Nima, Schalles, John, Ruberg, Steve, Errera, Reagan, Ma, Ronghua, Giardino, Claudia, Bresciani, Mariano, Barbosa, Claudio, Moore, Tim, Fernandez, Virginia, Alikas, Krista, Kangro, Kersti

“…Retrieval of aquatic biogeochemical variables, such as the near-surface concentration of chlorophyll-a (Chla) in inland and coastal waters via remote…”
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Synergy between Satellite Altimetry and Optical Water Quality Data towards Improved Estimation of Lakes Ecological Status by Ansper-Toomsalu, Ave, Alikas, Krista, Nielsen, Karina, Tuvikene, Lea, Kangro, Kersti

“…European countries are obligated to monitor and estimate ecological status of lakes under European Union Water Framework Directive (2000/60/EC) for sustainable…”
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Optical Water Type Guided Approach to Estimate Optical Water Quality Parameters by Uudeberg, Kristi, Aavaste, Age, Kõks, Kerttu-Liis, Ansper, Ave, Uusõue, Mirjam, Kangro, Kersti, Ansko, Ilmar, Ligi, Martin, Toming, Kaire, Reinart, Anu

“…Currently, water monitoring programs are mainly based on in situ measurements; however, this approach is time-consuming, expensive, and may not reflect the…”
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Application of Satellite-Derived Summer Bloom Indicators for Estonian Coastal Waters of the Baltic Sea by Rahn, Ian-Andreas, Kangro, Kersti, Jaanus, Andres, Alikas, Krista

“…The aim of this study was to test and develop the indicators for the remote sensing assessment of cyanobacterial blooms as an input to the estimation of…”
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Suitability of different in-water algorithms for eutrophic and absorbing waters applied to Sentinel-2 MSI and Sentinel-3 OLCI data by Ansper-Toomsalu, Ave, Uusõue, Mirjam, Kangro, Kersti, Hieronymi, Martin, Alikas, Krista

“…Optically complex waters present significant challenges for remote sensing due to high concentrations of optically active substances (OASs) and their inherent…”
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Effects of different conditions on particle dynamics and properties in West-Estonian coastal areas by Uusõue, Mirjam, Ligi, Martin, Kutser, Tiit, Bourrin, François, Uudeberg, Kristi, Kangro, Kersti, Paavel, Birgot

“…•Properties of suspended particulate matter on Estonian coasts were investigated.•Backscattering ratio was particle-size and origin dependent and highly…”
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Spatio-Temporal Variability of Phytoplankton Primary Production in Baltic Lakes Using Sentinel-3 OLCI Data by Soomets, Tuuli, Uudeberg, Kristi, Kangro, Kersti, Jakovels, Dainis, Brauns, Agris, Toming, Kaire, Zagars, Matiss, Kutser, Tiit

“…Phytoplankton primary production (PP) in lakes play an important role in the global carbon cycle. However, monitoring the PP in lakes with traditional…”
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Field Intercomparison of Radiometers Used for Satellite Validation in the 400–900 nm Range by Vabson, Viktor, Kuusk, Joel, Ansko, Ilmar, Vendt, Riho, Alikas, Krista, Ruddick, Kevin, Ansper, Ave, Bresciani, Mariano, Burmester, Henning, Costa, Maycira, D’Alimonte, Davide, Dall’Olmo, Giorgio, Damiri, Bahaiddin, Dinter, Tilman, Giardino, Claudia, Kangro, Kersti, Ligi, Martin, Paavel, Birgot, Tilstone, Gavin, Van Dommelen, Ronnie, Wiegmann, Sonja, Bracher, Astrid, Donlon, Craig, Casal, Tânia

“…An intercomparison of radiance and irradiance ocean color radiometers (the second laboratory comparison exercise—LCE-2) was organized within the frame of the…”
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Consistency of six in situ, in vitro and satellite-based methods to derive chlorophyll a in two optically different lakes by Alikas, Krista, Kangro, Kersti, Kõks, Kerttu-Liis, Tamm, Marju, Freiberg, Rene, Laas, Alo

“…Phytoplankton and its most common pigment chlorophyll a (Chl-a) are important parameters in characterizing lake ecosystems. We compared six methods to measure…”
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Laboratory Intercomparison of Radiometers Used for Satellite Validation in the 400–900 nm Range by Vabson, Viktor, Kuusk, Joel, Ansko, Ilmar, Vendt, Riho, Alikas, Krista, Ruddick, Kevin, Ansper, Ave, Bresciani, Mariano, Burmester, Henning, Costa, Maycira, D’Alimonte, Davide, Dall’Olmo, Giorgio, Damiri, Bahaiddin, Dinter, Tilman, Giardino, Claudia, Kangro, Kersti, Ligi, Martin, Paavel, Birgot, Tilstone, Gavin, Van Dommelen, Ronnie, Wiegmann, Sonja, Bracher, Astrid, Donlon, Craig, Casal, Tânia

“…An intercomparison of radiance and irradiance ocean color radiometers (The Second Laboratory Comparison Exercise—LCE-2) was organized within the frame of the…”
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Parameterization of chlorophyll-specific phytoplankton absorption coefficients for productive lake waters by Paavel, Birgot, Kangro, Kersti, Arst, Helgi, Reinart, Anu, Kutser, Tiit, Nõges, Tiina

“…We examined and parameterized chlorophyll-specific phytoplankton absorption coefficients (a*ph(λ)) for three turbid productive Estonian lakes on the basis of…”
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Detecting cyanobacterial blooms in large North European lakes using the Maximum Chlorophyll Index by Krista Alikas, Kersti Kangro, Anu Reinart

“…The Maximum Chlorophyll Index (MCI), developed for the MERIS sensor processing scheme, is used to investigate the seasonaldynamics, spatial distribution, and…”
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Seamless retrievals of chlorophyll-a from Sentinel-2 (MSI) and Sentinel-3 (OLCI) in inland and coastal waters: A machine-learning approach by Pahlevan, Nima, Smith, Brandon, Schalles, John, Binding, Caren, Cao, Zhigang, Ma, Ronghua, Alikas, Krista, Kangro, Kersti, Gurlin, Daniela, Hà, Nguyễn, Matsushita, Bunkei, Moses, Wesley, Greb, Steven, Lehmann, Moritz K., Ondrusek, Michael, Oppelt, Natascha, Stumpf, Richard

“…Consistent, cross-mission retrievals of near-surface concentration of chlorophyll-a (Chla) in various aquatic ecosystems with broad ranges of trophic levels…”
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Two decades of cyanobacterial bloom dynamics in a shallow eutrophic lake: remote sensing methods in combination with light microscopy by Kangro, Kersti, Pall, Anne-Mai, Laugaste, Reet, Piirsoo, Kai, Maileht, Kairi, Rahn, Ian-Andreas, Alikas, Krista

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Remotely estimating total suspended solids concentration in clear to extremely turbid waters using a novel semi-analytical method by Jiang, Dalin, Matsushita, Bunkei, Pahlevan, Nima, Gurlin, Daniela, Lehmann, Moritz K., Fichot, Cédric G., Schalles, John, Loisel, Hubert, Binding, Caren, Zhang, Yunlin, Alikas, Krista, Kangro, Kersti, Uusõue, Mirjam, Ondrusek, Michael, Greb, Steven, Moses, Wesley J., Lohrenz, Steven, O'Donnell, David

“…Total suspended solids (TSS) concentration is an important biogeochemical parameter for water quality management and sediment-transport studies. In this study,…”
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A hyperspectral inversion framework for estimating absorbing inherent optical properties and biogeochemical parameters in inland and coastal waters by O'Shea, Ryan E., Pahlevan, Nima, Smith, Brandon, Boss, Emmanuel, Gurlin, Daniela, Alikas, Krista, Kangro, Kersti, Kudela, Raphael M., Vaičiūtė, Diana

“…The simultaneous remote estimation of biogeochemical parameters (BPs) and inherent optical properties (IOPs) from hyperspectral satellite imagery of globally…”
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Summer greenhouse gas fluxes in different types of hemiboreal lakes by Rõõm, Eva-Ingrid, Lauringson, Velda, Laas, Alo, Kangro, Kersti, Viik, Malle, Meinson, Pille, Cremona, Fabien, Nõges, Peeter, Nõges, Tiina

“…Lakes are considered important regulators of atmospheric greenhouse gases (GHG). We estimated late summer open water GHG fluxes in nine hemiboreal lakes in…”
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